Heavy Duty Self-Adjusting
https://www.richelieu.com/qr/c/1187582
Light Duty Self-adjusting Barrel Bolt
https://www.richelieu.com/qr/c/1187581
This self-adjusting barrel bolt is a new innovative product that eliminates the common issues of misaligned barrel bolts due to door shifting.
With a selection of sizes – standard (4″ to 6″), heavy duty (4″ and 6″) and heavy duty padlock barrel bolts (6″ and 8″) – the self-adjusting barrel bolt offers a quick and easy one-time installation process and is functional with indoor and outdoor applications such as doors, gates and windows.
https://www.richelieu.com
Martin Brundle explains everything about the wheel.